Trusted Accounting and Tax Services
“Not only did Lisa get the most out of my 2023 return, but she also found mistakes in my 2022 return that H and R block missed.”
Best Accountants in Thornton, CO
15 firms listed · 5 in Thornton · 2 open weekends · 13 rated 4.5+
Data verified October 21, 2026
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Elevating Profits
“For the first time ever I feel like I finally have a handle on my business finances and this is only the beginning!”
Lynn CPA
KB Business
“She did our taxes and accounting for a few years and she did grate job on it.”
YTD Bookkeeping Service
Atlas Cpas & Advisors
“They have served my family for many years and I completely trust them.”
The 15 firms listed for Thornton, CO prepare accounts, statements and returns for businesses and individuals. What each says about its services and software comes from its own website; ratings and quotes come from public reviews.
Area overview: Thornton, CO
Of the 15 firms we list here, 5 are in Thornton itself and 10 come from towns including Denver (4, 11 mi), Commerce City (3, 7 mi) and Broomfield (1, 6 mi). 13 of the firms on this page have a rating, from 4.6 to 5.0 across 853 reviews; 7 have 50 or more reviews. When clients rate these firms on specific qualities, they most often praise professionalism (99%), responsiveness (82%) and quality (81%). The topics that come up most in reviews of the firms on this page are "knowledge", "communication" and "attention to detail". 2 are open on Saturdays. The services the firms on this page list most often on their websites are tax services (3), accounting services (2), bookkeeping (2), business consulting (2) and tax preparation (2). 6 have a BBB rating of A or A+. 8 have ten or more years of experience, the longest 45 years. 3 offer a free initial consultation. We have a website on file for all 15 of the firms on this page; 14 publish a contact page; 11 list a public email and 4 take bookings online. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Why are accounting firms outside Thornton listed on this page?
Inside Thornton itself the count is 5 of the 15 firms. The remainder come from other towns within 15 mi. Accounting work travels well, so the relevant question is usually state and industry rather than distance. Distances are straight-line.
4corners
“I had the pleasure of working with Sam Gillette and she was professional, knowledgeable, patient and a total pleasure to work with (yes even doing taxes).”
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Spies Tax Connections
“After after the interview and taking all the information and important documentation, Spies Tax Connection was able to get me a P&L in just 2 days.”
Redpoint Financial Group | CPA
“Jeff is filled with knowledge about tax-law and business strategy and does a great job at teaching, which has helped me make informed decisions.”
Latin Tax Center
“I have been using Latin Tax for over 10 years for all my tax services.”
Blue Bear Tax Solutions
“I am so grateful for the effort he put into solving my complex tax issues.”
Novak CPA & Financial Services
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Jackson Elite Tax and Consulting
“I've done my taxes with Danielle for the past few years because she provides professional, knowledgeable, and reliable service.”
Finop Group
“I have had the pleasure of working with Fin Op for the last several years.”
Dk/Rk Services
“They keep my bookkeeping in tip top shape, and are always there to education and fix any mistakes I might make!”
Why these companies made our list
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